Sound-box.



P. GATUGGI.

SOUND BOX.

APPLICATION FILED APILZG, 1912.

Patented May 13, 1913.

Wbfmmes: @5101 at. @2114,

UNITED STATES PATENT OFFICE.

PLINY CATUCCI, OF NEWARK, NEW JERSEY, ASINQR TO A. F. MEISSELBACH &

BROTHER, A CORPORATION OF NEW JERSEY.

soUivn-Box.

To'all whom it may concern:

Be it known that I, PLINY CATUCCI. a citizen of the United States,residing in the city of Newark, county of Essex, and State of NewJersey, have invented'certain new and useful Improvements inSound-Boxes,

of which the following is a specification.

I this kind, and at the same time a material reduction in the cost ofmanufacture.

The invention also lends itself admirably to a more delicate adjustmentof the parts than has hitherto been accomplished in sound boxes of the.character and kind for use onthe so called diskrecord, such as use thesharp pointed steel stylus needle.

In the drawingsaccompanying this application, Figure 1 illustrates a.front or face elevation of the sound box with the stylus lever andstylus shown in plan. Fig. 2 illustrates a longitudinal section of thesame. Fig. 3 is a perspective viewof the clamping ring. Fig. 4illustrates the stylus lever and stylus with the arts thereof separatedto show the detailsoi theirconstruction. Fig. 5 illustrates an enlargedsection of the jeweled screw pivots used to support the stylus lever.Fig. 6 is a cross section of the'stylus lever showing the bead stampedtherein for strengthening thesame. Fig. 7 illustrates the st lus leverblank. Fig. 8 illustrates a sli ht y modified form of stylus lever.

imilar reference numerals refer to like parts throughout thespecification and drawings.

The box body consists of a plane disk of metal 1 of considerablethickness, and "1s provided with the circumferential flange 2. Throughthe center of the disk 1 extends the aperture into wlnchis rlgldlyinserted the connecting thimble 3, saic thimble being provided for thepurpose of connecting the sound box to the sound conveylng tube 4. Onthe front face of the sound box body 1 is rigidly secured the clampingring by means of the screws 5 screw threaded into the flange 2. Thelatter is made from a disk of metal cut out in the center andSpecification of Letters Patent.

Application filed April 26, 191?. Serial 0, 693,353.

in Fig. 2. This clamping ring 'a substantially perfect stylus lever.

Patented May 13, 1913.

stamped to the shape shown in cross section beneath the inwardlyextending flange 6, to-the outer face of its flange 7, a trifle les.than the combined thickness of the two gaskets 8 and the diaphragm 9, sothat when the clamping ring 5 is rigidly secured to the flanges 2 of thebox body 1, the gaskets 8 will be slightly compressed with the margin ofthe diaphragm there-' between. Inasmuch as the clamping ring 1saccurately'gagcd as to thickness and di mensions, it will be seen thatthe gaskets 8 with thediaphragm 9 may always be put under the samecompression, and this uniform compression is found to be one of theimportant elements in the character of reproduction of sound in devicesof this kind. The clamping ring 5 is provided, upon the one side, withan extension 10, integral with the body of said ring, and this extensionis also provided with a pair of lugs 11, bent at sa d lugs are providedwith screw threaded apertures 11 to receive the screw threaded pivots 12in accurate alinement with each other.

It is one of the objects of this invention to provide a stylus lever,which in itself, will contain all of the elements found to be requisitein a stylus lever and its supports combined. The stylus lever proper isformed from sheet steel blanked to the shape asillustratcd in Fig. 7,and it consists of the strip 13 having the laterallugs l4 rearwardlydirected and provided with accurately positioned pivot sockets 15. Theend of the blank is also provided with rectangular projections 16. Inthis shape it is ready to be pressed into the form illustrated in Figs.1, 4, and 8, wherein the lugs 14 are shown bent at right angles to thegeneral plane of the blank, while the lateral projections 16 are bentinto tubular shape and the forward end is given a camber and providedwith a 'still'ening bead 17. The

stylus lever as thus formed, I findto be very rigid longitudinally andyet to possess all of the transverse elasticity required in In thetubular part, formed by the bending of the projections 16, is locatedthe stylus or needle socket 18. This socket consists of a cylindricalpiece of metal having the socket hole 19 extending into one end thereofand the has a depth right angles to the plane of the ring and lateralscrewv threaded aperture 20 to receive the set screw 21, whereby theneedle 99 is rigidly held in position. The socket piece 18has a diametera trifle larger than the inner diameter of the'tubular part of thestylus lever, so that when the socket 18 forced into the tubular part ofthe stylus lever, the arms 16 of said tubular part will firmly gri thesocket piece. 1 also pro- -'vide an ap nature 23 on the upper side ofthe tubular parts of the stylus lever, so that the set screw may passthrough it and into the screw threaded aperture 20 to grip the neeedle22, and thus the single set screw performs the double function ofrigidly holding the needle in the socket 159, and at the same time theset screw prevents any displacement of the socket piece 18'.

In practice, the pivot screws 12 may be of ordinary case hardened steelwith cone points, or if desired, they may be of a special constructionwith jeweled points. To make jeweled pivots the ordinary machine screw,like that shown in Fig. 5, may be used, said screw having its pointcounter-bored as at .24, with a small aperture 25 extending completelythrough the axis of the screw. A. cone point sapphire jewel 26 isinserted into the counterhore 2% where it is held in position by cement,such as shellac or amylucctate $27, The small aperture 25 is for thepurpose of preventing them-upping of the hubhle of air in the minutecounterbore which might result i displacing jewel 26.

In Fig. 8 I have illustrated a slightly modifid form of stylus lever. Inthis case, instead of curving the forward portion of the lever asillustrated in Fig. 4, the shank i3 is made perfectly straight with arectangular bend 13 made in its upper; end, with of course, a furtherrectangular bend 13 rovided for attachment to the center of thediaphragm by means of a rivet ofother attaching means as 28. In, orderto render the stylus lever perfectly igid, although made of springsteel, 1 provide the shank 13 with a longitudinal head 17 runningthroughout the length of said shank, and extendlng down to thecylindrical or tubular portion 16. The lateral arms 14 are'also of thesanie shape and configur on as the corresponding parts of the formtrated in Fig. 1,- lfnerder however, to der these lateral arms or lugs1% more elastic or resilientin the plane of the metal and yetlongitudinallyrigid, the necks ct arms-are made somewhat wider providedwith the apertures 29 so as to reduce their cross, section and yetpreserve the. longitudinal rigidity of the structure. In this modifiedform every part of stylus lever is intended and so constructed hepractically rigid with the exception the two lateral arms or lugs 14:;these for the purposes and objects above set forth are made resilient inorder that the pivot screws 12 may find a yielding bearing upon thestylus lever. i

From the above description, it will be seen that I have by theconstruction illustrated, provided a sound box and its requisite partsat once simple in construction, easy to Ina-"- nipulate, not likely togetout of order, and accomplishing all of the objects set forth in thepreamble.

I claim, p i 1. In a phonograph sound hex, the combination of a bodysection, a clamping ring having lateral supporting lugs thereon, and a.diaphragm, a rigid stylus lever, havin resilient supporting lugs'pivotally secure between the'lateral supporting lugs upon said clampingring.

2.4;, In a phonograph sound box, the combination of a body section,-adiaphragm, a clamping ring for securing said diaphragm to said bodysection, lateral lugs upon said ring, adjustable pivot pins, extendingthrough said lugs in'axial alinement with each other, a rigid stylusleverjl'sconnected to connected to the center of said diaphragm, a

pair of resilient supporting lugs upon "said stylus lever, adjustablepivots extending inwardly from said rigid lugs for pivotallysupporting'between them said rigid stylus lever through said resilientlugs thereon.

4. In a phonograph sound box, the combination of a body section, adiaphragm and a flanged clamping ring for securing .said diaphragm tosaid body section, a pair of rigid lugs into-g a1 with said clampingring, and extending laterally therefrom, pivot pins adjustably securedin said lugs, and a rigid stylus lever secured to said diaphragm andresilient lugs upon said lever located between said rigid lugs and heltherein by said pivots.

' 5, A stylus lever for phonograph sound boxes, comprising a rigid stripof metal having a lugs extending relatively upon opposite-sides of itsmedian line, with their eniitics bent at right angles to the gen- 1plane of the lever and provided near extremities with ivot sockets,sesc-nd pair of resilient. ugs extencing respectively upon oppositesidesof one can .treniity of said lever, being bent into a tul ularresilient ring, a cylindrical. stylus needle socket extending into andfricticnally held by said tubular rim? a clamuin 3 screw each other,saidpivot screws each having an anal counterbore extending throu h saidtubular resilient rin through sai socket to bear upon the sty us needleinserted into the axis of said socket.

' 6. In a bone bination o a ho curately secured in each of saidcounterbores, a rigid stylus lever connected to said diaphragm andresilient supporting lugs on 15 said lever for resiliently supportingsaid lever between said jewel pivots.

aph sound box, the com- In testimony whereof I have hereunto set ysection, a diaphragm, a

clampnlgofiing for secluringlsitid diaphragm my hand.

to sm y section atera ugs upon said ring, adjustable 'pivot screwsextending PLINY C throughisaid lugs in axial alinement with Witnesses:

LOUIS M. SANDERS, therein, a jewel pivot ac W. B. WAL'IZINGER.

-fioilies o( thi'a patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

, Washington, D. 0.

